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authorHamza Mahfooz <someguy@effective-light.com>2021-10-15 12:13:56 -0400
committerJunio C Hamano <gitster@pobox.com>2021-10-15 12:45:39 -0700
commitae39ba431ab861548eb60b4bd2e1d8b8813db76f (patch)
treea2c09de1515827b3a657064b689a5280f8b51c8b /grep.c
parent6a5c337922a5221d1f6d025d84e18b526df9944c (diff)
grep/pcre2: fix an edge case concerning ascii patterns and UTF-8 data
If we attempt to grep non-ascii log message text with an ascii pattern, we
run into the following issue:

    $ git log --color --author='.var.*Bjar' -1 origin/master | grep ^Author
    grep: (standard input): binary file matches

So, to fix this teach the grep code to use PCRE2_UTF, as long as the log
output is encoded in UTF-8.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Hamza Mahfooz <someguy@effective-light.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'grep.c')
-rw-r--r--grep.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/grep.c b/grep.c
index fe847a0111..f6e113e9f0 100644
--- a/grep.c
+++ b/grep.c
@@ -382,8 +382,10 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt
 		}
 		options |= PCRE2_CASELESS;
 	}
-	if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern) &&
-	    !(!opt->ignore_case && (p->fixed || p->is_fixed)))
+	if ((!opt->ignore_locale && !has_non_ascii(p->pattern)) ||
+	    (!opt->ignore_locale && is_utf8_locale() &&
+	     has_non_ascii(p->pattern) && !(!opt->ignore_case &&
+					    (p->fixed || p->is_fixed))))
 		options |= (PCRE2_UTF | PCRE2_MATCH_INVALID_UTF);
 
 #ifdef GIT_PCRE2_VERSION_10_36_OR_HIGHER